Set content does not work for UPnP file source

Hi,

I have Kodi 16.1 and 17 beta2 running on Windows 10. Works file with files on local disks.

I have some media on a usb drive connected to Fritz Box router. This works fine as a source. I can map the source as UPnP and can play files from it, but the option to “set content” does not show up when I add the source. So I cannot add this to movies or TV shows library.

Any idea how to fix this?

D